I tried a few different methods.. disabling/enabling the legacy boot.. F4, Ctrl-S, S, etc.. a few more keys.. all yes.. all at different stages.
I did plug in the wired ethernet and verified the PXE stack is able to see my image server. However even when the LAN was doing it's PXE magic, pre, and post, ctrl-S and other keys didn't access any form of configuration menu.
It's late and I'm giving up for the evening. Thanks again!